Question: What was Gregory VII's date of birth in the year 1020?
Paraphrase: Is it true that Gregory VII was born in 1020?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q133063 p:P569 ?s . ?s ps:P569 ?x filter(contains(YEAR(?x),'1020')) . ?s pq:P1326 ?value}